2- or 2,3-substituted 5,6,11,12-tetrathiotetracene and 5,6,11,12-tetraselenotetracene

Abstract

2- or 2,3-substituted 5,6,11,12-tetraseleneotetracene or -tetrathiotetracene of the formula ##STR1## in which X is S or Se, R is alkoxy, hydroxyalkoxy, aryloxy, cycloalkoxy, aralkoxy, --OH, --NH 2 , --Cl, --Br or substituted amino and Y is hydrogen or --COR. The compounds can be bonded as side groups to polymers. The polymers and the compounds combine with electron acceptors to form charge transfer complexes which can be used as electrically conductive layers.

We claim: 
     
       1. 2-, or 2,3-substituted 5,6,11,12-tetrathiotetracene or -tetraselenotetracene of the formula I ##STR18## in which X is S or Se and R is alkoxy having 1 to 12 C atoms, cycloalkoxy having 5 to 16 C atoms, ω-hydroxyalkoxy having 2 to 12 C atoms, aryloxy having 6 to 16 C atoms, aralkoxy having 7 to 12 C atoms --OH, --NH 2 , --Cl, --Br or --NR 1  R 2  in which R 1  is alkyl having 1 to 12 C atoms, cycloalkyl having 5 to 16 C atoms, ω-hydroxyalkyl having 2 to 12 C atoms, aryl having 6 to 16 C atoms or aralkyl having 7 to 16 C atoms and R 2  is a hydrogen atom or independently is defined in the same way as R 1 , and Y is a hydrogen atom or a --COR group or Y and R together are --CO--O-- or --CO--NR 2 . 
     
     
       2. Tetracene according to claim 1, in which R is alkoxy having 1 to 6 C atoms, ω-hydroxyalkoxy having 2 to 6 C atoms, --OH, --Cl, --NH 2  or NR 1  R 2 , in which R 1  is alkyl having 1 to 6 C atoms, ω-hydroxyalkoxy having 2 to 6 C atoms, phenyl or benzyl and R 2  is a hydrogen atom. 
     
     
       3. Tetracene according to claim 1, in which R is methoxy, ethoxy, 2-hydroxyethoxy, 3-hydroxypropoxy, 4-hydroxybutoxy, 6-hydroxyhexoxy, --OH, --Cl, --NH 2 , --NHCH 3 , --NHC 2  H 5  or --NHCH 2  CH 2  OH.